mrcheeze36 Posted September 3, 2003 Share Posted September 3, 2003 I am looking to change the rear end to an R200 but I am unsure of what to get. I will be doing a L28et swap in a 70' 240z and I was just wondering which would be the best choice for a turbo car. Here is what I've found: - I see a lot of people use the 87-89 300zxt 3.7 lsd R200 - the 79 280zx MT, 5 spd, 4 seater has a R200 3.7 - I have heard or some people using a 3.9 with their turbo Zs. - On http://www.zparts.com, under the parts list for drivetrain, there is a side note stating "R200 units with 3:36 gears are highly desired by owners of V8 and Turbo charged Z cars with lots of torque that desire high end speeds. Very Rare and hard to find." I will most likely be putting in a Quaife differential in it, and my car will be a daily driver. Which would be my best choice Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted September 3, 2003 Share Posted September 3, 2003 3.7 LSD is nice, but if you are going with the Quaiffe, the 3.54 is an excellent choice. Quote Link to comment Share on other sites More sharing options...
Guest kenafein240 Posted September 3, 2003 Share Posted September 3, 2003 I think the most common open diff is the 3.54 out of an automatic ZX. Quote Link to comment Share on other sites More sharing options...
mrcheeze36 Posted September 3, 2003 Author Share Posted September 3, 2003 3.7 LSD is nice, but if you are going with the Quaiffe, the 3.54 is an excellent choice. Hi SleeperZ. Could you please elaborate on why the 3.54 is the best choice? Also, have you heard anything about the 3.364 that zparts.com is taking about? Thank you ! Quote Link to comment Share on other sites More sharing options...
Guest HBskinheadZ Posted September 4, 2003 Share Posted September 4, 2003 I have an r200 w/3.54 i will not need because I bought another diff this weekend. I also have the half shafts with new boots and 4 nissan u-joints for them call me if your interested, I pm'd you with my #. Matt Quote Link to comment Share on other sites More sharing options...
Guest kenafein240 Posted September 4, 2003 Share Posted September 4, 2003 The 3.54 is a good choice for the same reason you mentioned the 3.36. You will have a nice top end and good freeway cruising, without going to the extreme of having a 3.36. Quote Link to comment Share on other sites More sharing options...
Clifton Posted September 4, 2003 Share Posted September 4, 2003 I run a welded 3.90 with my L28ET and a 3.70 LSD with my 7MGTE. I like em both. If you are going turbo you should get something other than an open diff. Also 70'-71' had the diff further forward. The rear bracket that mounts the control arms is straight. You will need to get one from a a later modle that has the rearward curve or the R200 will not fit. Quote Link to comment Share on other sites More sharing options...
j260z Posted September 4, 2003 Share Posted September 4, 2003 as far as i have been able to surmise the only car the R200 3.36 diff came on is the 280ZX 79 MT 4 sp. 2+2 (3.364) (R200). i have heard rumors that it also came on some 260Z 74 MT 4 sp. 2+2 (3.364) (R200) but i am not convinced yet. Quote Link to comment Share on other sites More sharing options...
Clifton Posted September 4, 2003 Share Posted September 4, 2003 as far as i have been able to surmise the only car the R200 3.36 diff came on is the280ZX 79 MT 4 sp. 2+2 (3.364) (R200). i have heard rumors that it also came on some 260Z 74 MT 4 sp. 2+2 (3.364) (R200) but i am not convinced yet. It is not a rumor, 260 2+2's do have an R200 3.36. I have one that I pulled from one. Quote Link to comment Share on other sites More sharing options...
j260z Posted September 5, 2003 Share Posted September 5, 2003 cool! i'll add that to my notes. Quote Link to comment Share on other sites More sharing options...
BayAreaZT Posted September 5, 2003 Share Posted September 5, 2003 Use the 3.54 or 3.70 LSD for a turbo S30. I went from a 4.11 to a 3.54 and boost buildup is noticably better and freeway passing is effortless. With a lower ratio you may not get full boost between shifts. Quote Link to comment Share on other sites More sharing options...
mrcheeze36 Posted September 6, 2003 Author Share Posted September 6, 2003 Thanks everyone for all your help. So most likely I will go with the 3.54 or the 3.7LSD. Now if i don't go for the Quaife right now (if I don't have enough funds) then the 3.7 LSD from the non white 87-89 300zxt would be the best choice right? Quote Link to comment Share on other sites More sharing options...
Clifton Posted September 6, 2003 Share Posted September 6, 2003 White Z31's turbos have clutch type LSD's. It's the Shiro Special (SS) that is white with white trim and wheels that has the viscous LSD. Quote Link to comment Share on other sites More sharing options...
Guest kenafein240 Posted September 11, 2003 Share Posted September 11, 2003 Good luck finding the 3.7 LSD, they are nearly impossible to find, but not impossible. Or people sell them for insane amounts of money. If one doesnt fall into my lap I'm just going to add a quaife unit into my 3.54 when I do have the funds. Quote Link to comment Share on other sites More sharing options...
Michael Posted September 11, 2003 Share Posted September 11, 2003 The 3.36 is attractive for those folks who have high-torque engines but don't have overdrive transmissions. This scenario is relatively common, as the transmissions that can reliably handle prodigious amounts of torque tend to not have an overdrive top gear; for example, the Powerglide (automatic), Doug Nash and Muncie M-22 (manual). I would love to find a 3.36 - or even better, the mythical 3.15 - but despite years of regular searching in Los Angeles-area pick-a-part yards, I never did come across a 1979 2+2 ZX. Though somewhere I heard that aftermarket suppliers are selling 3.36's in the $1K range. Quote Link to comment Share on other sites More sharing options...
Clifton Posted September 11, 2003 Share Posted September 11, 2003 3.36 R200's are not uncommon. I have one. Email me if you are intested. 3.15 didn't come in anything, it is a Nissan Motor Sports part. siragla@attglobal.net Quote Link to comment Share on other sites More sharing options...
jkube Posted September 18, 2003 Share Posted September 18, 2003 I'm just going through the same upgrade with my uncles zcar and my zcar...L28 Turbo motor with 5speed trans. I decided to use a 3.54 open and purchase a Limited slip kit from Retrofit ($300 plus $50 for them to install) and set the motors for low/mid range torque. Quote Link to comment Share on other sites More sharing options...
Guest kenafein240 Posted September 18, 2003 Share Posted September 18, 2003 Retrofit is that a company selling LSD units for the Early R200s? Do you have a link? Quote Link to comment Share on other sites More sharing options...
jkube Posted September 19, 2003 Share Posted September 19, 2003 They make the components that will fit into the gear carrier of the R200 diffs I have an email address - limitedslip@hotmail.com. Ask for Carlton. You will probably want to take out the gear carrier and remove the big crown gear. This will save on shipping costs. They will install the LSD component into your gear carrier and send it back. Then you can reinstall the crown gear and then install this assembly back into the housing. Its not all that difficult. Nice thing is it opens up the choices of ratios that you can use. Quote Link to comment Share on other sites More sharing options...
zbuild Posted September 22, 2003 Share Posted September 22, 2003 Hi Guys, Ive been offline for a loooooong time and everything here has changed so bear with me Ive a turbo'd L28 and I run an R200 3.54:1 LSD .. .I got an open 3.54 R200 and had the clutch pack centre from a slippery 4.11:1 R200 fitted by a diff guy. There were no special extra bits needed and its been going like a champion for 2 years now. Cheers - Simon Quote Link to comment Share on other sites More sharing options...
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